English to French Tech/Engineering Ships, Sailing, Maritime Boats/Marine

From a brochure describing the properties and use of an anti-fouling product.
The last page gives indications of quantities of product needed based on parts to be treated with the product.

Guideline quantities:
- shafts and dual propellers at 23" 500 ml kit
- Shafts and dual propellers at 24' - 42" 1 liter kit
- Example: A 56ft launch of which would include the propellers, shafts, struts, trim tabs and rudders: 2 x 1 liter kits

Thanks for your help.